IS 8711:2002 Wwfw7Fm mbwl-Fal@F?? kh%wm-T3Mif%bT (WFi'7 pi%-l%f) Indian Standard * mn m GAP FRAME OPEN FRONT MECHANICAL PRESSES -- CAPACITY RATINGS AND DIMENSIONS (First Revision) ICS 25.040.30 (3 BIS 2002 BUREAU MANAK OF BHAVAN, INDIAN STANDARDS ZAFAR MARC 9 BAHADUR SHAH NEW DELHI 110002 .%plemher 2002 Price Group 4 Metal Forming Machines Sectional Committee, BP 04 FOREWORD This Indian Standard (First Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Metal Forming Machines Sectional Committee had been approved by the Basic and Production Engineering Division Council. This standard was first published in 1978 with a view to assist the designers in designing new gap frame openback presses. Variety reduction was one of the objects aimed at by the manufacturers engaged in mass production and also to ensure improved designs within the sizes given in the standard to make it economical in long run. This standard is applicable for left to right shaft mechanical presses. 1n view of technological innovation and varied requirements of user industries, national and international, many changes have been introduced in the presses. Also these changes have been included in this standard. I,n this revision, the following major changes have been incorporated: a) Alternate types of bed, one with round opening and the other a rectangular opening have been included. T-slots have been provided in the bed with the round opening so that it can be used without a bedplate if required. Two types of bedplate are specified as Type 1 and Type 2. Details are also given for bedplug for beds with round holes and for the bedplate ring for bedplates of Type 2. Table 1 has been thoroughly modified. A choice of two values is given for some dimensions in this table. These are designated as series 1 and series 2. To minimize the variety of dimensions as far as possible it is intended that all the values for a given press should be selected from one of the series. However, in order to meet special requirements it is permitted to select the values for shut height only from either series 1 or series 2. Title of the standard also has been changed. assistance has been derived from ISO 6898: and dimensions' issued by the International 1984 `Open-fronlOrganization for b) c) d) While revising this standard considerable mechanical presses -- Capacity ratings Standardization (1S0). For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with 1S 2: 1960 `Rules for rounding off the numerical values (revise~'. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard. IS 8711:2002 Indian Standard GAP FRAME OPEN FRONT MECHANICAL PRESSES -- CAPACITY RATINGS AND DIMENSIONS (First Revision) 1 SCOPE This standard specifies capacity ratings and dimensions for gap fi-ame open front mechanical presses with or without a passage through the frame and with or without a slope (inclinable or non-inclinable). 2 REFERENCES The following standards contain provisions, which through reference in this text constitute provisions of this standard. At the time of publication, the editions indicated were valid All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: [S No. 919 (Part 1): 1993 Title 1S0 Systems of limit and fits: Part 1 Bases of tolerances, deviations and fits (second revision) IS No. 1821:1987 2013:1995 2102 (Part 1): 1993 Title Dimensions for clearance holes for bolts and screws (third revision) T-Slots -- Dimensions and spacing (third revision) General tolerances: Part 1 Tolerances for linear and angular dimensions without individual tolerances indication (third revision) Method of designation of mechanical and hydraulic presses (second revision) 8064:2002 3 DIMENSIONS The dimensions of gap frame open back presses shal I be as given in Table 1 (read with Fig. 1 to Fig. 7). 4 DESIGNATION The gap frame open front presses shall be designated as given in IS 8064. IS 8711:2002 BED //' tl _-- `\ $ @Da 1CAPACIT'f < 250 x-x -, -1 L' sECTION THROUGH ROUND OPENING kN CAPACITY > 400 x-x kN Y-Y (a) ROUND OPENING BEDS a IJ tl Ii * R25 I L . I . I tl [; H r+ x-x (b) G bl -, RECTANGULAR OPENING BED FIG. 1 LAYOUT OFPRESSAND ALTERNATIVEBEDS IS 8711:2002 c, i- bz 4 z-z STEM HOLE FIG, 2 SLIDE --M-FOR BEDS WITH ROUND HOLES FIG. 3 BEDPLATES TYPE 1 B --u= b FOR BEDS WITH FIG. 4 RECTANGULAR BEDPLATES TYPE 2 HOLES 3 IS 8711:2002 CAPACITY < 630 kN A I - CAPACITY < 250 kN A X-X T-SLOT I CAPACITY > 800 kN a) T-SLOTS IN BEOPLATES TYPE 1 CAPACITY > 400 kN b) T-SLOTS IN BEDPLATES TYPE 2 FIG.5 T-SLOTS FORBEDPLATES A-+ +- kl 0 @ A CAPACITY < 250 -+ 0 CAPACITY > 400 kN ~ w--l A-A A-A 0° 0° I-JQ x x FIG.6 BEDPLATERING FORBEDPLATES TYPE 2 FIG.7 BEDPLUG FORBEDSWITHROUND HOLES 4 IS 8711:2002 Table 1 The Dimensions of Gap Frame Open Back Presses (Clause 3) All dimensions in millimetres. 400 630 (800) 1000 (1250) 1600 (2000) 2500 Nominal Capacity Note Referring 100 160 250 Throat depth series 1 165 -- 180 -- 210 -- 235 290 260 325 285 355 310 385 340 425 370 465 405 505 440 545 anti,, Shut height series 2 series 1 e! series 2 1 160 200 180 225 200 250 225 280 250 315 275 345 300 375 325 410 355 450 390 490 425 530 Bed to slide distance series 1 ez Side adjustment series 1 series 2 series 2 2 225 265 250 295 275 325 305 360 335 400 365 435 395 470 425 510 460 555 500 600 550 655 40 -- 45 50 56 80 63 85 71 90 112 160 80 100 125 20 180 20 90 112 140 200 100 125 112 140 125 160 200 280 g u z Stroke length Max series 1 63 71 12 80 90 16 100 140 16 160 224 6 3 series 2 Min Max -- &tin Direct drive series 1 3 series 2 Geared drive series i -- -- 2 2 2 125 180 25 250 25 2.5 2.5 3 3 -- 3 3 4 4 -- 4 6 4 6 4 6 4 6 6 9 6 9 6 9 6 9 3 series 2 Nominal Surface air pressure 4 0.5 (5) 450 500 355 b, series 1 560 400 630 450 800 710 500 900 630 280 780 550 980 690 305 850 600 1060 750 335 925 655 1155 825 365 1000 710 1250 900 400 1050 780 1375 980 435 1IN 850 I500" I o(i) 475 r, b, series 2 /, Round opening D, tot, H] 1 315 -- -- 180 200 225 560 250 ~ m 5 160 180 200 225 250 275 300 325 355 390 425 D, Shoulder depth 6 30 45 56 m, Rectangular opening G 225 250 180 280 200 315 225 355 250 390 275 425 300 460 325 500 355 550 390 600 425 H T-slots width A pitch P, Maximum ioclinatio,, angle of ~" 7 8 160 18 -- 200 22 250 320 23 400 30 25 5 IS 8711:2002 Table 1 (Continued) Nominal Capacity Note Leferring 100 160 250 400 630 (800) 1000 (1250) 1600 (2000) 2500 ;urt'ace ~? series 1 2 280 180 315 200 355 225 400 250 500 450 280 560 355 490 305 615 390 530 335 670 425 580 365 735 465 630 400 800 500 690 435 875 550 750 475 950 600 J2 series 2 2 315 Item hole 9, tol H7 5 40 75 40 50 85 65 105 45 :Iamping bolt 92 Attaching holes D8 series 1 235 18 265 300 335 375 22 410 450 490 530 28 580 630 M20 I M24 I :, series 2 Surface 425 475 515 560 615 670 735 800 b series 1 440 305 490 345 -- 550 390 620 440 790 700 490 890 770 540 970 840 590 1050 905 645 1135 980 700 1230 1070 770 1355 1160 840 1480 f b series 2 t Through hole -- 90 180 95 200 I00 225 550 106 250 225 620 112 280 250 680 118 305 275 740 125 335 300 815 132 365 325 890 140 400 355 970 150 435 390 ]050 D,, 9 160 475 425 L+ tel. HI 1 5 10 160 180 200 D, Shoulder depth HI Thickness 10 10 6 36 45 56 s T-slots width A pitch PI pitch Pz 7 9 10 65 70 75 80 85 90 95 100 105 110 28 125 18 -- -- 180 200 178 M 10 225 250 100 280 248 M 12 I 22 125 125 305 273 335 298 365 323 400 353 160 160 200 ] 200 475 423 d, to}@ dz ~1 5 435 388 M 16 1 158 198 223 D(, k, 11 180 I 2(XI I I 215 I 235 I 18 255 1 I 280 1 305 1 335 ~ 2 15 6 I 1 3 I 24 f, .f2 s s 2 63 68 73 78 83 88 93 98 103 108 123 1 6 IS 8711:2002 Table 1 (Concluded) NonlinxI Capacity Note Referring 5 100 180 158 90 160 250 400 630 (800) 1000 (1250) 1600 (2000) 2500 -- d, d, D, g-l D<, k> tol d9 200 178 100 225 198 112 250 223 125 280 248 140 305 273 155 335 298 170 M 12 13 365 323 185 400 353 200 435 388 215 475 423 235 M 16 17 M 10 0 11 125 10.5 140 2 15 1.5 36 45 73 7a 83 88 93 160 180 200 215 1 235 255 3 280 305 335 .f ./i .X s, s2 6 63 18 2 56 98 103 108 24 68 123 NOTES I Shut height is measured from the bedplate surface to the slide surface with the maximum variable stroke, stroke down and slide adjustment ap. 2 Bed to slide distance is measured from the bed surface to the slide surface with the maximum variable stroke, stroke down and d ide adjustment up. 3 Distance abewe bottom dead centre at which the capacity of the press shall be measured on maximum stroke. 4 For the operation of pneumatic equipment. 5 Tolerances shall be as given in 1S 919 (Part 1), 613edplate ring and bedplug maybe 0.05 mm MUX in mm above bedplate surface and bed surface, respectively, 7 T-slots dimensions shall be as given in [S 2013. 8 t3cds with round opening only. 9 Values corresponding to bedplate Type 1. 10 Values corresponding to bedplates Type 2. I I Dimensions for clearance holes shall be as given in IS 1821. 12 All sizes within brackets are non-preferred, 13 Tolerances of untoleranced dimensions shall be of medium class according to IS 2102 (Part 1). 14 Nominal capacity is given in kilo newtons, pressure in megapascals. 7 Bureau of Indian Standards B [S is a statutory institution established under the Bureau harmonious development of the activities of standardization, and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis periodically; a standard along with amendments is reaffirmed when needed; if the review indicates that changes are needed, it is taken should ascertain that they are in possession of the latest amendments `BIS Catalogue' and `Standards: Monthly Additions'. This Indian Standard has been developed from Doc : No. of comments. Standards are also reviewed such review indicates that no changes are up for revision. Users of Indian Standards or edition by referring to the latest issue of CJjIndian Standards Act, 1986 to promote marking and quality certification of goods BP 04 (OO13). 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